[mythtv-users] Compiler optimizations

Michael McConnell mmcconnell at uniserve.com
Sat Feb 21 17:56:13 EST 2004

I notice a "somewhat" strange thing today;

    I recompiled mythtv and all the modules with the CXXFLAGS as
        -03 -march=pentium3 --fast-math -fomit-frame-pointer
    where as the default is
        -03 -march=pentiumpro -fomit-frame-pointer
Having changed nothing else (and having repeated this 2 times)

CPU usage while in livetv, average based on 20 minutes of data (conducted
PentiumPro Optimization
VMSTAT CPU Usage ~78%

Pentium3 Optimization
VMSTAT CPU Usage ~49%

Amazing differents.


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